Overview
Use via stitching to improve RF grounding, shielding and return current paths.
Design checklist
- Place stitching vias around RF traces and board edges.
- Use short return paths near RF connectors.
- Avoid gaps in the ground plane under controlled impedance traces.
- For high frequency layouts, via spacing should be small compared with wavelength.
Practical notes
RF layout is sensitive to trace geometry, return current, grounding, enclosure materials and nearby components. Always compare your layout with the RF module or antenna manufacturer reference design.
Common mistakes
Common mistakes include routing under antennas, broken ground return paths, long matching network traces, poor connector grounding and tuning before the final enclosure is built.